The Bus Passenger Counter magnetic door sensor mainly consists of a switch and a magnet, the switch part is connected by a reed switch by a lead wire, and a fixed package is formed. The magnet part is enclosed by a magnet with a corresponding magnetic field strength in a plastic or alloy case, To a certain distance, the switch caused by the switch so as to sense changes of the position of the door.
When door is open, counter will start to work. When door is closed, counter stops working.
After door sensor installation, need to adjust and make sure when door is open, the counter's detect line(blue and yellow) is appearing.